Madonna, interviewed by Access Hollywood at the New York premiere of "Filth & Wisdom", spilled the beans about two surprise appearances of her "Hard Candy" collaborators in the forthcoming "Sticky & Sweet Tour" itinerary in North America.

"Justin is going to make a guest appearance probably in Los Angeles," she said.
"Pharrell came on stage Saturday, which was great, and I'm hoping Kanye is going to join us in Chicago or Miami."

Madonna also commented one scene of the film, where she uses Britney Spears' "Baby One More Time" as the soundtrack for a ballet dancer doing a striptease.

"That’s my wink and my smile to Britney Spears, whom I love," Madonna told Access.